I suppose it is possible that I do not. But I believe I used the URL provided in the email I received in response to registering for the Network trial a couple of weeks ago. It didn't occur to me to verify that. The previous URL from 3/23 appears to have expired. Thanks for the prompt reply.

I re-registered and I'm downloading again.

The name of the archive I used does not have NETWORK in it.
zcs-3.0.1_GA_160_RHEL4